Added Deutsche Post as a shipping carrier, including new models, admin, serializers, and API client integration. Updated Carrier and SiteConfiguration models to support Deutsche Post, including shipping price and API credentials. Added requirements for the Deutsche Post API client and dependencies.
Enhanced the downloader backend and frontend to support playlist URLs for video info and downloads. The API now returns structured playlist information, allows selecting specific videos for download, and returns a ZIP file for playlist downloads. Updated OpenAPI types, removed deprecated parameters (start_time, end_time, playlist_items), and improved Content Security Policy handling in nginx. Refactored frontend to handle playlist selection and updated generated API models accordingly.
Refactored commerce models to support refunds, invoices, and improved carrier/payment logic. Added new serializers and viewsets for products, categories, images, discount codes, and refunds. Introduced Stripe client integration and removed legacy Stripe admin/model code. Updated Dockerfile for PDF generation dependencies. Removed obsolete migration files and updated configuration app initialization. Added invoice template and tasks for order cleanup.
